Share-based compensation (Tables)

9 Months Ended

Sep. 30, 2018

Share-Based Compensation [Abstract]

Summary of status of company's stock option plan

A summary of the activity for stock options issued under the Company's Plans for the indicated periods is presented below:

Stock Option Totals	Shares			Weighted Average Exercise Price
Outstanding at December 31, 2016		3,214,398		$	2.68
-Exercised		(1,545,161	)	$	2.27
-Granted		1,400,203		$	5.72
Outstanding at December 31, 2017		3,069,440		$	4.28
-Exercised		(5,000	)	$	3.43
-Granted		307,355		$	2.37
-Cancelled		(2,519,243	)	$	4.93
Outstanding at September 30, 2018		852,552		$	1.66

Weighted average contractual life and exercise price

The following is the weighted average contractual life in years and the weighted average exercise price at September 30, 2018 of:

			Weighted Average Remaining	Weighted Average
	Number of Options		Contractual Life	Exercise Price
Options outstanding and vested		727,552	2.1 years	$	1.58